JPH047268Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a block connection structure that is suitably used when mutually positioning and connecting concrete blocks for civil engineering and construction.

[Prior Art] Conventionally, common ditches for passing power lines, telephone lines, water and sewer pipes, etc., have generally been constructed using cast-in-place concrete; Large-scale formwork work and reinforcing work will be required, which will make the work more complicated.

Therefore, in recent years, this type of common groove has been developed into a block comprising a groove-shaped main body formed by connecting a plurality of top-opening blocks, and a lid mounted on the top-opening surface of this main body. The idea is to make it a manufactured product.

By the way, if such a structure is adopted, it becomes necessary to connect the upper end open blocks to each other. As a means for connecting the blocks, for example, a method using prestressing steel or a method using a strip plate can be considered. That is, in the former case, the prestressing steel material is inserted into the blocks to be connected,
Nuts screwed onto both ends of this prestressing steel material are tightened to tightly connect the blocks. In the latter case, a circular hole or a long hole extending in the connecting direction is provided at both ends of the strip plate, and a bolt inserted through the circular hole or the long hole is fixed to an insert nut embedded in the block. The blocks are connected to each other by. However, in such buildings, it is usually necessary to connect the blocks to each other through a variable sealing material, so if the blocks are connected by such means, it is difficult to accurately define the relative positions of the blocks. becomes difficult. For this reason, the length of the common groove main body constructed by connecting multiple blocks is not constant, and for this reason, it is necessary to provide a concave-convex engaging portion, etc., between the main body and the lid, as described below. In such cases, the problem is likely to occur that the main body and the lid cannot be engaged with each other.

[Problems to be Solved by the Invention] The purpose of the present invention is to solve the problem that it is difficult to easily and firmly connect blocks to each other while accurately positioning each other.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a pair of blocks whose joining surfaces are butted against each other, and a joint is attached to the surface of each of these blocks that is substantially orthogonal to the joining surface. a circular hole provided at one end of the connection plate; and a taper provided at the other end of the connection plate perpendicular to the connection direction and having one end opened at one side edge of the connection plate. a first fastening mechanism that has a shaped notch hole and a shaft member that fits into the circular hole of the connecting plate, and fastens one end of the connecting plate to one block via the shaft member; A shaft member that engages with the narrow part of the notch hole, and a bent part that engages with the connecting plate to engage the narrow part with the shaft member, and a hole that engages with the shaft member. and a second fixing mechanism for fixing the other end of the connecting plate to the other block via the shaft member.

[Operation] With such a block connection structure, the shaft member of the first fastening mechanism fits into the circular hole of the connecting plate, and the shaft member of the second fastening mechanism fits into the notch hole of the connecting plate. Therefore, as long as the shaft member is engaged with the narrow part of the notch hole without any gap by the taper guiding action of the inner edge of the notch hole, the shaft of the first fastening mechanism can be inserted into the first fastening mechanism. The interaxial distance between the member and the shaft member of the second fastening mechanism becomes a preset constant value. By engaging the positioning member of the second fastening mechanism with the connecting plate in this state, the connecting plate is positioned at the position where it should be fastened, thus accurately positioning one block and the other block. They can be connected to each other in a connected state.

[Example] Hereinafter, an example in which the present invention is applied to a common ditch will be described with reference to FIGS. 1 to 17.

FIG. 1 is a partially cutaway side view of the prefabricated common groove, and FIGS. 2 and 3 are cross-sectional views taken along the - line and - line in FIG. 1. As shown in these drawings, this common ditch consists of a common ditch main body 1 buried near the ground surface, and an upper end 2a connected to the ground surface G.
The upper end opening surface 1a of this common groove main body 1 is exposed to
It comprises a lid body 2 placed on top.

The common groove main body 1 includes a plurality of top-opening blocks 3.
₁ to 3 ₆ ... are tightly connected by a connecting plate 4 in a groove shape. Top opening type blocks 3 ₁ to 3 ₆ ......
is made of precast and has a reinforced concrete structure in which the bottom plate 5 and both side walls 6 are integrally molded, and on the outer edge side of the upper end opening surface 1a,
A step portion 1b that is lowered by one step is provided. The bottom plate 5 of each of the top-opening blocks 3 ₁ to 3 ₆ . . . has an inner surface 5a with a gentle slope downward to the right in FIG. 2, and a water collection groove 5b is provided at the right end. Also,
Insert nuts 7 for mounting a shelf are buried in the side walls 6 with openings on the inner surface 6b, and an opening 8 for leading out a cable is provided. The insert nuts 7 are for screwing onto a shelf (not shown) used for installing cables such as power lines and telephone lines, and a plurality of insert nuts 7 are buried at required height positions. The opening 8 is for leading out the cable, etc., but is initially closed with a thin wall 8a, and is used after the thin wall 8a is destroyed. In addition, the top opening type block 3
As shown in FIGS _{. 1} , 4 and 12, one of the joining end surfaces 9 of 1 to 3 ₆ ... has a protrusion 9a extending from the bottom plate 5 to the bottom wall 6 on its outer periphery. , the other joint end surface 11 has a concave portion 11a extending from the bottom plate 5 to the side wall 6 on its outer peripheral edge. and,
One joint end surface 9 and the other joint end surface 11 of each of the adjacent top-opening blocks 3 ₁ to 3 ₆ are abutted against each other, and the protruding portion 9a is brought into engagement with the recessed portion 11a. There is. As shown in FIG. 12, an elastic sealing material 12 made of water-expandable rubber is interposed between the joint end surfaces 9 and 11, and the elastic sealing material 12 is tightened by the tightening action of the connecting plate 4. It is compressed to ensure sealing performance.

The connection structure between the top-opening block 3 ₁ (one block) and the top-opening block 3 ₂ (the other block) by the connecting plate 4 is as shown in FIGS. 5 to 11. That is, in this block connection structure, a connection plate is attached to the outer surface 6a of the side wall 6 of the top-opening block 3 ₁ , 3 ₂ with the joint end surfaces 9 , 11 butted against each other. As shown in FIG. 9, the connecting plate 4 is a rectangular piece made of iron, and has a circular hole 13 at one end and a cutout hole 14 at the other end. The notch hole 14 is formed in the connection direction (a-b in the figure).
The connecting plate 4 has a tapered shape extending in a direction perpendicular to the connecting plate 4, and has a wide end 14a opening at one side edge 4a of the connecting plate 4. One end of this connecting plate 4 is fastened to one block 3 ₁ via a first fastening mechanism 15, and the other end is fastened to the other block 3 ₂ via a second fastening mechanism 16. It is stuck at . As shown in FIG. 5, _FIG . 6, and FIG. A bolt 18, which is a shaft member, is screwed into the insert nut 17. On the other hand, as shown in FIGS. 5, 6, and 7, the second fastening mechanism 16 includes an insert nut 21 embedded in the side wall 6 of the block ₃₂ and a cutout hole 14 in the connecting plate 4.
The insert nut 2 is engaged with the narrow portion 14b of the insert nut 2.
A bolt 22, which is a shaft member, is screwed onto the bolt 22, and the connecting plate 4 is screwed onto the head 22a side of the bolt 22.
and a hexagonal nut 23 for tightening and fixing the block ₃₂ to the block 32. A positioning tool, which is a positioning member, is provided between the hexagonal nut 23 and the connecting plate 4 to prevent movement of the connecting plate 4 with respect to the bolt 22 at a position where the bolt 22 engages with the narrow portion 14b. 24 are interposed. That is, as shown in FIGS. 5 and 10, this positioning tool 24 is shaped like a flat washer, and has a bent portion 24a at one end that engages with the other side edge 4b of the connecting plate 4. and a bolt hole 24 which is a hole through which the bolt 22 passes through at the other end.
It has b. The connection between the blocks ₃₁ and ₃₂ using the connection plate 4 is performed in the following manner. First, as shown in FIG. 11, one end of the connecting plate 4 is temporarily fixed rotatably to one block ₃₁ with the bolt 18, and the hexagonal nut 23 and the positioning screw are attached to the insert nut ₂₁ of the other block 32. Bolt 2 with fitting 24 attached
Screw on 2. Then, the connecting plate 4 is rotated about the bolt 18, and the other end is pushed into the gap between the positioning tool 24 and the outer surface of the block ₃₂ . Thereby, the bolt 22 is press-fitted into the notch hole 14 of the connecting plate 4, and the notch hole 1
The bolt 22 engages with the narrow portion 14b of the cutout hole 14 by the guiding action of the tapered inner edge 14c of the notch 14. As a result, both blocks 3 ₁ ,
The elastic sealing material 12 interposed between the joint end surfaces 9 and 11 of 3 ₂ is consolidated, and the blocks 3 ₁ and 3 ₂
The connection distance L between them is determined to be a predetermined value. After that, the bent portion 24a of the positioning tool 24 is locked to the other side edge 4b of the connecting plate 4,
Tighten the hexagonal nut 23. Incidentally, this connection by the connection plate 4 is performed at both side wall portions of the blocks 3 ₁ and 3 ₂ . And block 3 ₂
and 3 ₃ , blocks 3 ₃ and 3 ₄ , blocks 3 ₄ and 3 ₅ , and blocks 3 ₅ and 3 ₆ . . . are connected in a similar manner.

On the other hand, the lid body 2 is shown in FIGS. 1 to 4 and 15.
As shown in the figure, the common groove main body 1 is provided on both sides of the lower surface.
It is a plate-like piece having a protrusion 31 that engages with the step portion 1b of the lid, and is made up of first lid blocks 32 and second lid blocks 33 arranged alternately. The first lid block 32 is a plate-shaped block made of precast and has a reinforced concrete structure, and both joint end faces 32a and 32b are formed diagonally upward. The second lid block 33 is a plate-shaped block made of precast and has a reinforced concrete structure, and its joint end surfaces 33a and 33b are formed diagonally downward. By arranging the first lid block 32 and the second lid block 33 alternately, the joint end surface 32a
and 33b (32b and 33a) are in close contact with each other via an elastic sealing material 34 made of water-expandable rubber. As shown in FIGS. 16 and 17, the elastic sealing material 34 is attached to the joint end surfaces 32a,
It is provided along the holding groove 35 provided in 32b,
Both ends 34a thereof are located at the tip of the protrusion 31. Furthermore, a sidewalk paving block 36 is fixed to the upper surface of each of the lid blocks 32, 33.

Between this lid body 2 and the common groove main body 1, the lid body 2 is located at the upper end opening surface 1a of the main body 1.
A concave-convex engaging portion 37 is provided to prevent movement along. Specifically, as shown in FIG. 14, this uneven engagement portion 37 is formed by forming a step portion 1b of the upper end opening surface 1a of each of the upper opening type blocks 3 ₁ to 3 ₆ .
It is provided with an oblique notch 38 partially provided on the side, and a protrusion 39 having a triangular cross section formed integrally with the protrusion 31 on the lower surface of each of the lid blocks 32, 33. By placing the lid blocks 32, 33 on the top-opening blocks ₃₁ to ₃₆ , the protrusion 39 engages with the notch 38. The longitudinal dimension of this notch 38 and the longitudinal dimension of the protrusion 39 are set to substantially the same value, and when the protrusion 39 engages with the notch 38, the lid block 32 , 33 are prohibited from sliding in the direction of arrow a-b.

In addition, 41 is the upper end opening surface 1 of the common groove main body 1.
42 is a supporting member made of water-expandable rubber provided between the lower surface of the lid 2 and the end surface of the stepped portion 1b of the upper opening surface 1a and the tip surface 31a of the protrusion 31 of the lid 2. This is a water-expandable rubber elastic sealing material provided between the Therefore, the sealing material 34 of the lid body 2
Both ends 34a are set so as to come into contact with the upper surface of this elastic sealing material 42, as shown in FIG. Further, 43 indicates each of the lid blocks 32, 33.
This is an insert nut buried in the top surface of the This insert nut 43 is attached to the lid block 3.
This is for screwing on the hook 44 used when lifting 2 and 33, but when lifting work is not done, the lid nut 45 is used instead of the hook 44.
is screwed on.

With such a configuration, the common groove can be completed by assembling the top-opening blocks 3 ₁ to 3 ₆ ... and the lid blocks 32, 33 on-site, thereby eliminating the need for large-scale on-site work. There is no need for formwork or reinforcing steel work, which greatly reduces the complexity of on-site work. In addition, the top opening type blocks 3 ₁ to 3 _{6 .} . . and the lid block 32,
33 can be manufactured by mass production methods during construction work, etc., so it is possible to perform sufficient quality control, and it is possible to provide a common gutter with high dimensional accuracy and easy cost reduction. be.

Moreover, blocks 3 ₁ and 3 ₂ (3 ₂ and 3 ₃ , 3 ₃ and 3 ₄ , 3 ₄ and 3 ₅ , 3 ₅ and 3 ₆ . . . ) constituting the main body 1
Since the connections between the blocks are made using a special connecting plate 4, the blocks 3 ₁ and 3 ₂ (3 ₂ and 3 ₃ , 3 ₃
and 3 ₄ , 3 ₄ and 3 ₅ , 3 ₅ and 3 ₆ ...) It becomes possible to ensure mutual positioning. That is, with the block connection structure as described above, the bolt 18 of the first fastening mechanism 15 fits into the circular hole 13 of the connecting plate 4, and the bolt 22 of the second fastening mechanism 16 fits into the connection plate 4. Since it will be inserted into the notch hole 14 of the plate 4, the other end of the connecting plate 4 is lightly hit downward with a hammer or the like so that the bolt 22 is engaged with the narrow part 14b of the notch hole 14 without any gap. As long as the bolt 18 of the first fastening mechanism 15
The distance between the shaft and the bolt 22 of the second fastening mechanism 16 becomes a preset constant value L. In other words, since the notch hole 14 has a tapered shape,
By biasing the connecting plate 4 in the rotational direction, the bolt 22 can be reliably engaged with the narrow portion 14b of the notch hole 14, and in this state, both bolts 18 , 22 is regulated by the connecting plate 4 and becomes a constant value. Therefore, one block ₃₁ and the other block ₃₂ (blocks ₃₂ and ₃₃ , blocks ₃₃ and 3
₄ , blocks 3 ₄ and 3 ₅ , 3 ₅ and 3 ₆ . . . ) can be interconnected in an accurately positioned state. Therefore, the sealing material interposed between the joining end surfaces 9 and 11 of the blocks 3 ₁ and 3 ₂ (3 ₂ and 3 ₃ , 3 ₃ and 3 ₄ , 3 ₄ and 3 ₅ , 3 ₅ and 3 ₆ . . . ) By keeping the degree of consolidation of the sealing material 12 constant, it is possible to make the sealing performance and the durability of the sealing material 12 uniform. In addition, in this way, the common groove main body 1 can be assembled to the length dimension as designed, so the uneven engagement portion 37 provided between the common groove main body 1 and the lid body 2 can be assembled without any problem. It can be smoothly engaged and disengaged. In other words, the longitudinal dimension of the common groove body 1 becomes the design value, and the lid block 3 for the body 1
It is possible to eliminate problems such as difficulty in attaching and detaching parts 2 and 33.

It should be noted that the second fastening mechanism is of course not limited to that of the above embodiments, and may be of the type shown in FIGS. 18 and 19, for example.
That is, the second fastening mechanism 1 in this embodiment
Reference numeral 16 designates an insert nut 21 buried in the other block ₃₂ , a bolt 122 which is screwed into this insert nut 21 and serves as a shaft member for tightening the connecting plate 4 to the outer surface of the block ₃₂ , and a head of this bolt 122. 122a and the connecting plate 4, the positioning tool 2 defines the position of the connecting plate 4 with respect to the bolt 122 so that the bolt 122 engages with the narrow part 14b of the notch hole 14.
4. In this case, as shown in FIG. 19, the connecting plate 4 is rotated to align the notch hole 14 with the insert nut 21 of the other block ₃₂ , and then,
The bolt 122 equipped with a positioning tool is screwed into this insert nut 21, and the bolt 12
2 is positioned in the narrow part 14b of the notch hole 14, and the bent part 24a of the positioning tool 24 is engaged with the other side edge 4b of the connecting plate 4, and then the bolt 12
2, the connecting plate 4 can be fixed to the block ₃₂ .

Furthermore, the form of the positioning tool is not limited to that of the above embodiments, but may be of the form shown in FIG. 20 or 21, for example. That is, the positioning 124 shown in FIG.
The end portion on the bolt hole 124b side is formed into a circular shape. In addition, the positioning tool 2 shown in FIG.
24, the bolt hole 224b is connected to the bent portion 224a.
It has a notched hole shape that extends parallel to the . With such a device, after the bolt 22 or 122 is screwed into the insert nut 21, the positioning tool 224 can be installed at the predetermined position shown by the imaginary line in FIG. There is an advantage that the tool 224 is less likely to get in the way of the connection work.

Further, in the above embodiments, the present invention is applied to the connection of blocks that constitute the main body of a common groove, but the present invention is not limited to this, and can be applied to various other blocks. It can be applied to the connection of

[Effects of the invention] Since the present invention has the above-described configuration, it is possible to provide a block connection structure that allows blocks to be easily and firmly connected to each other while accurately positioning each other. .

[Brief explanation of the drawing]

1 to 17 show an embodiment of the present invention,
FIG. 1 is a partially cutaway side view, FIG. 2 is a sectional view taken along the - line in FIG. 1, FIG. 3 is a sectional view taken along the - line in FIG. 1, and FIG. 4 is a partially cutaway perspective view.
Fig. 5 is a front view showing the connecting portion between the top-opening blocks, Fig. 6 is a sectional view taken along the - line in Fig. 5, Fig. 7 is a sectional view taken along the - line in Fig. 5, and Fig. 8 is a sectional view taken along the - line in Fig. 5. FIG. 9 is a front view of the connecting plate used in the connecting part, and FIG.
Figure 0 is a front view of the positioning tool used in the same part.
FIG. 11 is a perspective view showing the connection procedure using the connection plate;
FIG. 12 is a sectional view showing the joint portion of the top opening type block, FIG. 13 is an enlarged view of section A in FIG. 2, FIG. 14 is an enlarged view of section B in FIG. 3, and FIG.
5 is a side sectional view showing the lid body, FIG. 16 is a partial side view showing the lid block joint portion of the lid body, and FIG. 17 is a sectional view taken along the line C--C in FIG. 16. 1st
8 is a sectional view corresponding to FIG. 6 showing another embodiment of the present invention, and FIG. 19 is a perspective view corresponding to FIG. 11 showing the same embodiment. FIGS. 20 and 21 are front views of positioning tools showing other embodiments of the present invention, respectively. 1... Main body (common groove main body), 1a... Upper end opening surface, 1b... Step part, 2... Lid body, 2a... Upper end,
3 ₁ to 3 ₆ ... Top opening type block, 4 ... Connection plate, 4a ... One side edge, 4b ... Other side edge, 5 ... Bottom plate, 5a ... Inner surface, 5b ... Water collection groove, 6 ...Side wall, 6a...Outer surface, 6b...Inner surface, 7...Insert nut, 8...Cable lead-out opening, 8
a...Thin wall, 9...Joint end surface, 9a...Protrusion portion,
11... Joint end surface, 11a... Concave portion, 12...
Sealing material, 13...Circular hole, 14...Notch hole, 1
4a... wide side end, 14b... narrow width part, 14
c... Tapered inner edge, 15... First fastening mechanism,
16... Second fastening mechanism, 17... Insert nut, 18... Shaft member (bolt), 21... Insert nut, 22... Shaft member (bolt), 22
a...Head, 23...Hexagonal nut, 24...Positioning tool, 24a...Bending portion, 24b...Bolt hole, 31...Protrusion, 31a...Tip surface, 32...
First lid block, 32a, 32b... joint end surface, 33... second lid block, 33a, 33b
...Joining end surface, 34...Elastic sealing material, 35...
Retaining groove, 36... Sidewalk pavement block, 37... Concave/convex engaging portion, 38... Notch, 39... Protrusion, 41...
... Supporting material, 42 ... Elastic sealing material, 43 ... Insert nut, 44 ... Hook, 45 ... Lid nut, 116 ... Second fastening mechanism, 122 ... Shaft member (bolt), 122a ... Head, 124... positioning tool, 124b... bolt hole, 224... positioning tool, 224a... bending part, 224b... bolt hole.

Claims (1)

[Claims for Utility Model Registration] (1) A pair of blocks with joint surfaces abutted against each other, a connecting plate attached to a surface of each block that is substantially orthogonal to the joint surface, and a connecting plate of the connecting plate. a circular hole provided at one end; a tapered notch hole provided at the other end of the connecting plate perpendicular to the connecting direction and having one end opened at one side edge of the connecting plate;
a first fastening mechanism that has a shaft member that fits into the circular hole of the connecting plate and fastens one end of the connecting plate to one block via the shaft member; and a narrow portion of the notch hole. a shaft member that engages with the shaft member; and a positioning member that has a bending portion that engages with the connecting plate to engage the width sandwiched portion with the shaft member, and a positioning member that has a hole that engages with the shaft member. and a second plate that fixes the other end of the connecting plate to the other block via the shaft member.
A block connecting structure characterized by comprising a fastening mechanism. (2) The second fastening mechanism includes an insert nut embedded in the other block, a bolt serving as a shaft member screwed into the insert nut, and a bolt screwed onto the head side of the bolt, and the second fastening mechanism a nut for tightening the other end of the connecting plate engaged with the bolt toward the block; and a nut interposed between the nut and the connecting plate so that the bolt engages with the narrow part of the notch hole. a bolt hole having a bent portion at one end that engages with an upper edge above the notch hole of the connecting plate and a hole through which the bolt passes through the other end for defining the position of the connecting plate with respect to the bolt; The block connecting structure according to claim 1, which is a registered utility model, characterized in that the block connecting structure comprises a positioning tool which is a positioning member comprising: (3) The second fastening mechanism includes an insert nut embedded in the other block, a bolt screwed into the insert nut and serving as a shaft member for tightening the connecting plate to the outer surface of the block, and a head of the bolt. and a notch hole in the connecting plate at one end for defining the position of the connecting plate with respect to the bolt so that the bolt engages with the narrow part of the notch hole. a positioning member having a bent portion that engages with the upper edge thereof, and has a bolt hole in the form of a notch hole drilled in the bent portion and the closed end of the bent portion that engages with the bolt; 2. The block connection structure according to claim 1, which is characterized by comprising a barrel positioning tool.